TLE7232GS Datasheet, PDF (11/32 Pages) Infineon Technologies AG – SPI Driver for Enhanced Relay Control

SPI Driver for Enhanced Relay Control
SPIDER - TLE7232GS
Block Description and Electrical Characteristics
5
Block Description and Electrical Characteristics
5.1
Power Stages
The SPIDER - TLE7232GS is an eight channel low-side relay switch. The power stages are built by N-channel
vertical power MOSFET transistors.
5.1.1 Power Supply
The SPIDER - TLE7232GS is supplied by power supply line V_DD which is used for the digital as well as the analog
functions of the device including the gate control of the power stages. There is a power-on reset function
implemented for the supply line. After start-up of the power supply, all SPI registers are reset to their default
values. A capacitor at pins V_DD to GND is recommended.
The pin V_SO is the supply pin of the digital output buffer at pin SO.
V_SO can therefore be used to vary the high state output voltage of the SO pin, in order to be compatible to 3.3 V
and 5 V microcontrollers. If V_SO supply voltage is missing the device is fully functional, only the SO pin has no
output.
There is a reset pin available. At low level at this pin, all registers are set to their default values and the quiescent
supply current is minimized.
Data Sheet
11
Rev. 1.0, 2007-12-18